Correlation between macrophyte vegetation and some water properties in the irrigation system of the Lower river Po Plane |
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Authors: | Filippo Piccoli Renato Gerdol |
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Affiliation: | 1. Istituto di Botanica, Università di Ferrara , Corso Porta Mare 2, I-44100, Ferrara, Italy;2. Istituto ed Orto Botanico, Università di Pavia , Via S. Epifanio 14, I-27100, Pavia, Italy |
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Abstract: | Abstract The distribution of macrophytic plant communities, defined by phytosociological numerical methods, in the irrigation system of the Lower river Po Plane was correlated with water characteristich. Water samples were collected periodically within phytocoena well-characterized from the phytosociological viewpoint. Nymphaeid-dominated communities (all. Nymphaeion) usually occur in deeper waters than elodeid- myriophyllid-, and ceratophyllid-dominated vegetation types (all. Potamogetonion). Hydrochemically, all of the studied waterbodies can be classified as rich in electrolytes and in bicarbonates. The distribution of phytocoena reflects a gradient in nutrient content: the Nymphoidetum peltatae characterizes waters moderately rich; the Myriophyllum spicatum community and the Trapetum natantis fairly rich; the Potamogetonetum pectinati and the Ceratophyllum demersum community very rich in nutrients. |
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Keywords: | Macrophyte vegetation water properties Lower river Po Plane Nymphaeion Potamogetonion |
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